Analysis

  • max time kernel
    114s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-08-2024 19:06

General

  • Target

    C1619D951B039CE9CB600815E8B14B26.exe

  • Size

    1007KB

  • MD5

    c1619d951b039ce9cb600815e8b14b26

  • SHA1

    4def66d57b972beb3065a29ed1fe88610943d383

  • SHA256

    e9837fc1d609e0084452590c09746a89af73ec6abf45a26ab58a4d48c9ebceac

  • SHA512

    c1f071ab1cbe2e12576227a69618f2a717d49c6fa632280b2d769c53c1c8d89bfe51bd524f5aed13fb67d84109e4aa99ec05d96a589284f275135f036bdb2edc

  • SSDEEP

    24576:heAy4u8ZernsYvWwUIGOh5rE1xrJK06WwkS9Ev95FZCyGWsfe:Iyern6VIVqxrJ5KyvVZCyGWsfe

Malware Config

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

  • Async RAT payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Delays execution with timeout.exe 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\C1619D951B039CE9CB600815E8B14B26.exe
    "C:\Users\Admin\AppData\Local\Temp\C1619D951B039CE9CB600815E8B14B26.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4696
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 5
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4832
      • C:\Windows\SysWOW64\timeout.exe
        timeout 5
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:2968
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 5
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1844
      • C:\Windows\SysWOW64\timeout.exe
        timeout 5
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:2624
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:4168
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4308,i,8548254608087149642,10333768245962368401,262144 --variations-seed-version --mojo-platform-channel-handle=4172 /prefetch:8
    1⤵
      PID:1692

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/4168-1053-0x0000000000D00000-0x0000000000D1B000-memory.dmp

      Filesize

      108KB

    • memory/4168-1054-0x0000000074A4E000-0x0000000074A4F000-memory.dmp

      Filesize

      4KB

    • memory/4168-1055-0x00000000052C0000-0x00000000052DA000-memory.dmp

      Filesize

      104KB

    • memory/4168-1056-0x0000000074A40000-0x00000000751F0000-memory.dmp

      Filesize

      7.7MB

    • memory/4168-1057-0x0000000074A40000-0x00000000751F0000-memory.dmp

      Filesize

      7.7MB

    • memory/4168-1063-0x0000000074A40000-0x00000000751F0000-memory.dmp

      Filesize

      7.7MB

    • memory/4168-1062-0x0000000074A40000-0x00000000751F0000-memory.dmp

      Filesize

      7.7MB

    • memory/4168-1061-0x0000000074A4E000-0x0000000074A4F000-memory.dmp

      Filesize

      4KB

    • memory/4168-1060-0x0000000005930000-0x0000000005996000-memory.dmp

      Filesize

      408KB

    • memory/4168-1059-0x0000000005820000-0x00000000058BC000-memory.dmp

      Filesize

      624KB

    • memory/4168-1058-0x0000000005770000-0x000000000577A000-memory.dmp

      Filesize

      40KB

    • memory/4696-35-0x0000000005DB0000-0x0000000005E97000-memory.dmp

      Filesize

      924KB

    • memory/4696-24-0x0000000005DB0000-0x0000000005E97000-memory.dmp

      Filesize

      924KB

    • memory/4696-70-0x0000000005DB0000-0x0000000005E97000-memory.dmp

      Filesize

      924KB

    • memory/4696-67-0x0000000005DB0000-0x0000000005E97000-memory.dmp

      Filesize

      924KB

    • memory/4696-66-0x0000000005DB0000-0x0000000005E97000-memory.dmp

      Filesize

      924KB

    • memory/4696-63-0x0000000005DB0000-0x0000000005E97000-memory.dmp

      Filesize

      924KB

    • memory/4696-61-0x0000000005DB0000-0x0000000005E97000-memory.dmp

      Filesize

      924KB

    • memory/4696-59-0x0000000005DB0000-0x0000000005E97000-memory.dmp

      Filesize

      924KB

    • memory/4696-55-0x0000000005DB0000-0x0000000005E97000-memory.dmp

      Filesize

      924KB

    • memory/4696-53-0x0000000005DB0000-0x0000000005E97000-memory.dmp

      Filesize

      924KB

    • memory/4696-51-0x0000000005DB0000-0x0000000005E97000-memory.dmp

      Filesize

      924KB

    • memory/4696-49-0x0000000005DB0000-0x0000000005E97000-memory.dmp

      Filesize

      924KB

    • memory/4696-47-0x0000000005DB0000-0x0000000005E97000-memory.dmp

      Filesize

      924KB

    • memory/4696-45-0x0000000005DB0000-0x0000000005E97000-memory.dmp

      Filesize

      924KB

    • memory/4696-41-0x0000000005DB0000-0x0000000005E97000-memory.dmp

      Filesize

      924KB

    • memory/4696-39-0x0000000005DB0000-0x0000000005E97000-memory.dmp

      Filesize

      924KB

    • memory/4696-38-0x0000000005DB0000-0x0000000005E97000-memory.dmp

      Filesize

      924KB

    • memory/4696-43-0x0000000005DB0000-0x0000000005E97000-memory.dmp

      Filesize

      924KB

    • memory/4696-33-0x0000000005DB0000-0x0000000005E97000-memory.dmp

      Filesize

      924KB

    • memory/4696-31-0x0000000005DB0000-0x0000000005E97000-memory.dmp

      Filesize

      924KB

    • memory/4696-29-0x0000000005DB0000-0x0000000005E97000-memory.dmp

      Filesize

      924KB

    • memory/4696-27-0x0000000005DB0000-0x0000000005E97000-memory.dmp

      Filesize

      924KB

    • memory/4696-25-0x0000000005DB0000-0x0000000005E97000-memory.dmp

      Filesize

      924KB

    • memory/4696-57-0x0000000005DB0000-0x0000000005E97000-memory.dmp

      Filesize

      924KB

    • memory/4696-21-0x0000000005DB0000-0x0000000005E97000-memory.dmp

      Filesize

      924KB

    • memory/4696-19-0x0000000005DB0000-0x0000000005E97000-memory.dmp

      Filesize

      924KB

    • memory/4696-17-0x0000000005DB0000-0x0000000005E97000-memory.dmp

      Filesize

      924KB

    • memory/4696-15-0x0000000005DB0000-0x0000000005E97000-memory.dmp

      Filesize

      924KB

    • memory/4696-13-0x0000000005DB0000-0x0000000005E97000-memory.dmp

      Filesize

      924KB

    • memory/4696-11-0x0000000005DB0000-0x0000000005E97000-memory.dmp

      Filesize

      924KB

    • memory/4696-9-0x0000000005DB0000-0x0000000005E97000-memory.dmp

      Filesize

      924KB

    • memory/4696-7-0x0000000005DB0000-0x0000000005E97000-memory.dmp

      Filesize

      924KB

    • memory/4696-6-0x0000000005DB0000-0x0000000005E97000-memory.dmp

      Filesize

      924KB

    • memory/4696-1042-0x0000000074A40000-0x00000000751F0000-memory.dmp

      Filesize

      7.7MB

    • memory/4696-1043-0x0000000006000000-0x000000000606E000-memory.dmp

      Filesize

      440KB

    • memory/4696-1044-0x0000000006070000-0x00000000060BC000-memory.dmp

      Filesize

      304KB

    • memory/4696-5-0x0000000074A40000-0x00000000751F0000-memory.dmp

      Filesize

      7.7MB

    • memory/4696-4-0x0000000005DB0000-0x0000000005E9E000-memory.dmp

      Filesize

      952KB

    • memory/4696-3-0x0000000074A40000-0x00000000751F0000-memory.dmp

      Filesize

      7.7MB

    • memory/4696-2-0x0000000074A40000-0x00000000751F0000-memory.dmp

      Filesize

      7.7MB

    • memory/4696-1-0x0000000000070000-0x0000000000172000-memory.dmp

      Filesize

      1.0MB

    • memory/4696-0-0x0000000074A4E000-0x0000000074A4F000-memory.dmp

      Filesize

      4KB

    • memory/4696-1045-0x0000000074A4E000-0x0000000074A4F000-memory.dmp

      Filesize

      4KB

    • memory/4696-1046-0x0000000074A40000-0x00000000751F0000-memory.dmp

      Filesize

      7.7MB

    • memory/4696-1047-0x00000000072F0000-0x0000000007894000-memory.dmp

      Filesize

      5.6MB

    • memory/4696-1048-0x0000000005570000-0x00000000055C4000-memory.dmp

      Filesize

      336KB

    • memory/4696-1052-0x0000000074A40000-0x00000000751F0000-memory.dmp

      Filesize

      7.7MB